Flameless heat gun



FIG. 1 is a front, left side, bottom, reduced, perspective view of a flameless heat gun showing my new design;

FIG. 2 is a left side elevational view thereof, the opposite side being a mirror image of the side shown;

FIG. 3 is a front elevational view thereof; and

FIG. 4 is a rear elevational view thereof. 

The ornamental design for a flameless heat gun, as shown and described. 